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Open-weight model · Feature extraction

bge-small-en-v1.5

by Beijing Academy of Artificial Intelligence BAAI/bge-small-en-v1.5

bge-small-en-v1.5 is an open-weight model for feature extraction from Beijing Academy of Artificial Intelligence, released under MIT License. It has 33M parameters and a 512-token context. At 16-bit it needs about 0.1 GB of GPU memory, which fits on 1x MI300X from $1.85 an hour, at the lowest prices in the SAVRN Index. It draws 59.1M downloads a month.

More details please refer to our Github: FlagEmbedding. If you are looking for a model that supports more languages, longer texts, and other retrieval methods, you can try using bge-m3.

Parameters33M
Context512
Weights400.1 MB
Licensemit
AccessOpen weights
Monthly Downloads59.1M

Runs On

What it takes to serve bge-small-en-v1.5 (33M parameters): the memory its weights need at each precision, and the cheapest way to rent enough data-center GPUs to hold them.

PrecisionWeightsMemory neededCheapest setupPer hourAlso fits
16-bit 0.1 GB 0.1 GB 1x MI300X (192 GB)
Vultr
$1.85 1x H100 $1.99 · 1x MI325X $2.00
8-bit 0.0 GB 0.0 GB 1x MI300X (192 GB)
Vultr
$1.85 1x H100 $1.99 · 1x MI325X $2.00
4-bit 0.0 GB 0.0 GB 1x MI300X (192 GB)
Vultr
$1.85 1x H100 $1.99 · 1x MI325X $2.00

Memory is the weights at that precision plus 20% for the runtime and a short context; a long context needs more. Prices are the lowest on-demand hourly rates in the SAVRN Index, read Oct 16, 2026.

bge-small-en-v1.5 on every accelerator the SAVRN Index prices, at every precision

SAVRN's Notes on bge-small-en-v1.5

33M parameters, 0.1 GB at 16-bit, weights that round to zero at 8-bit and 4-bit, and 63.4M downloads a month — the most-pulled model in this part of the directory, ahead of every base and large neighbor. It turns documents and queries into vectors for retrieval work inside a 512-token context, and the cheapest setup we price, one 192 GB MI300X at $1.85 an hour, is occupied a fraction of a percent by it. This model rides on the GPU your generator already rents.

MIT permits commercial use, modification and redistribution, provided the copyright and permission notices stay attached. The 14 files total 401.1 MB because the repository carries bin, ONNX and safetensors copies of the same 12-layer weights stored in float32 — convert once and keep one. Nothing has changed since 2024-02-22, and the publisher itself points longer-context and multilingual users at bge-m3. Treat this as the small, fast, English-only default.

Model Card

By Beijing Academy of Artificial Intelligence, published under mit, revision 5c38ec7c405e.

FlagEmbedding

Model List | FAQ | Usage | Evaluation | Train | Contact | Citation | License

More details please refer to our Github: FlagEmbedding.

If you are looking for a model that supports more languages, longer texts, and other retrieval methods, you can try using bge-m3.

English | 中文

FlagEmbedding focuses on retrieval-augmented LLMs, consisting of the following projects currently:

News

Read the full model card (2,729 words)

Configuration

Architecture
BertModel
Context length (tokens)
512
Layers
12
Hidden size
384
Feed-forward size
1,536
Attention heads
12
Vocabulary size
30,522
Stored precision
float32
Model type
bert

Identity and Version

Repository
BAAI/bge-small-en-v1.5
Publisher
Beijing Academy of Artificial Intelligence
Task
Feature extraction
Modality
Text
Library
sentence-transformers
Parameters
33M parameters
Languages
en
Revision
5c38ec7c405ec4b44b94cc5a9bb96e735b38267a
First published
2023-09-12
Last updated
2024-02-22

Files and Weights

14 files, 401.1 MB in total. The weights are 3 files totalling 400.1 MB in bin, onnx, safetensors.

Weights3 files · 400.1 MB
Configuration6 files · 1.6 KB
Tokenizer3 files · 943.3 KB
Documentation1 file · 94.8 KB
Repository1 file · 1.5 KB
Every file
FileTypeSizeSHA-256
model.safetensorsWeights133.5 MB 3c9f31665447
onnx/model.onnxWeights133.1 MB 828e1496d7fa
pytorch_model.binWeights133.5 MB 84868a67d847
1_Pooling/config.jsonConfiguration190 B —
config.jsonConfiguration743 B —
config_sentence_transformers.jsonConfiguration124 B —
modules.jsonConfiguration349 B —
sentence_bert_config.jsonConfiguration52 B —
special_tokens_map.jsonConfiguration125 B —
README.mdDocumentation94.8 KB —
.gitattributesRepository1.5 KB —
tokenizer.jsonTokenizer711.4 KB —
tokenizer_config.jsonTokenizer366 B —
vocab.txtTokenizer231.5 KB —

License and Download

License
mit
Access
Open weights, no gate
Download size
400.1 MB
Download from Beijing Academy of Artificial Intelligence

Released by Beijing Academy of Artificial Intelligence through its official repository on Hugging Face. Read the license.

Built From

Evaluations

Each result is shown as reported, with the conditions its reporter stated. None is a SAVRN measurement. A comparison lines two results up only when their configuration, unit and setup are all stated and identical.

BenchmarkConditionsResultReported byRevisionDate
MTEB AmazonCounterfactualClassification (en) Configuration enTask ClassificationMetric accuracyComparison conditions not established 73.791 BAAI
Publisher reported
Evaluated revision not stated —
MTEB AmazonCounterfactualClassification (en) Configuration enTask ClassificationMetric apComparison conditions not established 37.2192 BAAI
Publisher reported
Evaluated revision not stated —
MTEB AmazonCounterfactualClassification (en) Configuration enTask ClassificationMetric f1Comparison conditions not established 68.0915 BAAI
Publisher reported
Evaluated revision not stated —
MTEB AmazonPolarityClassification Configuration defaultTask ClassificationMetric accuracyComparison conditions not established 92.7538 BAAI
Publisher reported
Evaluated revision not stated —
MTEB AmazonPolarityClassification Configuration defaultTask ClassificationMetric apComparison conditions not established 89.4677 BAAI
Publisher reported
Evaluated revision not stated —
MTEB AmazonPolarityClassification Configuration defaultTask ClassificationMetric f1Comparison conditions not established 92.7388 BAAI
Publisher reported
Evaluated revision not stated —
MTEB AmazonReviewsClassification (en) Configuration enTask ClassificationMetric accuracyComparison conditions not established 46.986 BAAI
Publisher reported
Evaluated revision not stated —
MTEB AmazonReviewsClassification (en) Configuration enTask ClassificationMetric f1Comparison conditions not established 46.5594 BAAI
Publisher reported
Evaluated revision not stated —
MTEB ArguAna Configuration defaultTask RetrievalMetric map_at_1Comparison conditions not established 35.846 BAAI
Publisher reported
Evaluated revision not stated —
MTEB ArguAna Configuration defaultTask RetrievalMetric map_at_10Comparison conditions not established 51.388 BAAI
Publisher reported
Evaluated revision not stated —
MTEB ArguAna Configuration defaultTask RetrievalMetric map_at_100Comparison conditions not established 52.133 BAAI
Publisher reported
Evaluated revision not stated —
MTEB ArguAna Configuration defaultTask RetrievalMetric map_at_1000Comparison conditions not established 52.141 BAAI
Publisher reported
Evaluated revision not stated —
MTEB ArguAna Configuration defaultTask RetrievalMetric map_at_3Comparison conditions not established 47.037 BAAI
Publisher reported
Evaluated revision not stated —
MTEB ArguAna Configuration defaultTask RetrievalMetric map_at_5Comparison conditions not established 49.579 BAAI
Publisher reported
Evaluated revision not stated —
MTEB ArguAna Configuration defaultTask RetrievalMetric mrr_at_1Comparison conditions not established 36.558 BAAI
Publisher reported
Evaluated revision not stated —
MTEB ArguAna Configuration defaultTask RetrievalMetric mrr_at_10Comparison conditions not established 51.658 BAAI
Publisher reported
Evaluated revision not stated —
MTEB ArguAna Configuration defaultTask RetrievalMetric mrr_at_100Comparison conditions not established 52.402 BAAI
Publisher reported
Evaluated revision not stated —
MTEB ArguAna Configuration defaultTask RetrievalMetric mrr_at_1000Comparison conditions not established 52.41 BAAI
Publisher reported
Evaluated revision not stated —
MTEB ArguAna Configuration defaultTask RetrievalMetric mrr_at_3Comparison conditions not established 47.345 BAAI
Publisher reported
Evaluated revision not stated —
MTEB ArguAna Configuration defaultTask RetrievalMetric mrr_at_5Comparison conditions not established 49.798 BAAI
Publisher reported
Evaluated revision not stated —
MTEB ArguAna Configuration defaultTask RetrievalMetric ndcg_at_1Comparison conditions not established 35.846 BAAI
Publisher reported
Evaluated revision not stated —
MTEB ArguAna Configuration defaultTask RetrievalMetric ndcg_at_10Comparison conditions not established 59.55 BAAI
Publisher reported
Evaluated revision not stated —
MTEB ArguAna Configuration defaultTask RetrievalMetric ndcg_at_100Comparison conditions not established 62.596 BAAI
Publisher reported
Evaluated revision not stated —
MTEB ArguAna Configuration defaultTask RetrievalMetric ndcg_at_1000Comparison conditions not established 62.759 BAAI
Publisher reported
Evaluated revision not stated —
MTEB ArguAna Configuration defaultTask RetrievalMetric ndcg_at_3Comparison conditions not established 50.667 BAAI
Publisher reported
Evaluated revision not stated —
MTEB ArguAna Configuration defaultTask RetrievalMetric ndcg_at_5Comparison conditions not established 55.228 BAAI
Publisher reported
Evaluated revision not stated —
MTEB ArguAna Configuration defaultTask RetrievalMetric precision_at_1Comparison conditions not established 35.846 BAAI
Publisher reported
Evaluated revision not stated —
MTEB ArguAna Configuration defaultTask RetrievalMetric precision_at_10Comparison conditions not established 8.542 BAAI
Publisher reported
Evaluated revision not stated —
MTEB ArguAna Configuration defaultTask RetrievalMetric precision_at_100Comparison conditions not established 0.984 BAAI
Publisher reported
Evaluated revision not stated —
MTEB ArguAna Configuration defaultTask RetrievalMetric precision_at_1000Comparison conditions not established 0.1 BAAI
Publisher reported
Evaluated revision not stated —
MTEB ArguAna Configuration defaultTask RetrievalMetric precision_at_3Comparison conditions not established 20.389 BAAI
Publisher reported
Evaluated revision not stated —
MTEB ArguAna Configuration defaultTask RetrievalMetric precision_at_5Comparison conditions not established 14.438 BAAI
Publisher reported
Evaluated revision not stated —
MTEB ArguAna Configuration defaultTask RetrievalMetric recall_at_1Comparison conditions not established 35.846 BAAI
Publisher reported
Evaluated revision not stated —
MTEB ArguAna Configuration defaultTask RetrievalMetric recall_at_10Comparison conditions not established 85.42 BAAI
Publisher reported
Evaluated revision not stated —
MTEB ArguAna Configuration defaultTask RetrievalMetric recall_at_100Comparison conditions not established 98.435 BAAI
Publisher reported
Evaluated revision not stated —
MTEB ArguAna Configuration defaultTask RetrievalMetric recall_at_1000Comparison conditions not established 99.644 BAAI
Publisher reported
Evaluated revision not stated —
MTEB ArguAna Configuration defaultTask RetrievalMetric recall_at_3Comparison conditions not established 61.166 BAAI
Publisher reported
Evaluated revision not stated —
MTEB ArguAna Configuration defaultTask RetrievalMetric recall_at_5Comparison conditions not established 72.191 BAAI
Publisher reported
Evaluated revision not stated —
MTEB ArxivClusteringP2P Configuration defaultTask ClusteringMetric v_measureComparison conditions not established 47.4028 BAAI
Publisher reported
Evaluated revision not stated —
MTEB ArxivClusteringS2S Configuration defaultTask ClusteringMetric v_measureComparison conditions not established 40.0155 BAAI
Publisher reported
Evaluated revision not stated —

Memory Requirements

PrecisionWeights in memory
As published400.1 MB
16-bit0.1 GB
8-bit0.0 GB
4-bit0.0 GB

Weights only, from the published parameter count; the key-value cache and runtime add to this.

Built on This Model

Compare bge-small-en-v1.5

Questions About bge-small-en-v1.5

How much GPU memory does bge-small-en-v1.5 need?

About 0.1 GB at 16-bit and 0 GB at 4-bit: the weights (33M parameters) plus a working margin. A long context needs more.

What is the cheapest GPU to run bge-small-en-v1.5 on?

At 16-bit, 1x MI300X from $1.85 an hour; at 4-bit, 1x MI300X from $1.85 an hour, at the lowest on-demand prices the SAVRN Index lists.

Can I use bge-small-en-v1.5 commercially?

Yes. bge-small-en-v1.5 is released under MIT License. The MIT License is a short permissive license. It permits commercial use, modification and redistribution, provided the copyright notice and permission notice are included.

What is bge-small-en-v1.5's context length?

512 tokens, from the maximum position embeddings in its published configuration.

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